CDRH124NP-560MC Equivalent & Substitute Parts

Part Overview

The CDRH124NP-560MC is a 56 µH shielded surface mount inductor manufactured by Sumida America Components Inc. This fixed inductor is rated for 1.8 A continuous current with a maximum DC resistance of 190 mOhm and operates across the temperature range of -40°C to 100°C. The component is classified as Active product status and carries ROHS3 compliance certification.

Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting mechanical and environmental requirements. Alternative sources provide design flexibility, supply chain redundancy, and potential cost optimization without compromising circuit performance.

Key Parameters

Parameter	Value	Unit	Significance for Substitution
Inductance	56	µH	Critical - must match exactly
Inductance Tolerance	±20%	%	Defines acceptable inductance range
Current Rating	1.8	A	Critical - substitute must support rated current
DC Resistance (DCR)	190	mOhm Max	Critical - affects power dissipation and efficiency
Shielding	Shielded	-	Critical - electromagnetic interference containment
Mounting Type	Surface Mount	-	Critical - PCB assembly compatibility
Package / Case	Nonstandard	-	Critical - physical footprint compatibility
Size / Dimension	12.00 x 12.00	mm	Critical - PCB layout constraint
Height - Seated (Max)	4.50	mm	Critical - clearance and assembly compatibility
Operating Temperature	-40 to 100	°C	Defines environmental operating range
RoHS Status	ROHS3 Compliant	-	Regulatory compliance requirement
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-	Handling and storage requirements

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters:

Electrical Parameters:

Inductance value must equal 56 µH at 100 kHz test frequency
Inductance tolerance must be ±20% or tighter
Current rating must be greater than or equal to 1.8 A
DC resistance must not exceed 190 mOhm maximum

Mechanical Parameters:

Mounting type must be Surface Mount
Package classification must be Nonstandard
Physical dimensions must accommodate 12.00 mm × 12.00 mm footprint with maximum 4.50 mm seated height
Shielding must be present

Compliance Parameters:

RoHS3 compliance required
Moisture Sensitivity Level must be 1 (Unlimited) or equivalent

Environmental Parameters:

Operating temperature range must encompass -40°C to 100°C minimum

Parts meeting all critical parameters are classified as direct substitutes. Parts meeting electrical and mechanical parameters with extended temperature ranges are classified as compatible alternatives.

Parameter Comparison

Parameter	CDRH124NP-560MC (Sumida)	SRR1240-560M (Bourns)	P1168.563NLT (Pulse Electronics)
Inductance	56 µH	56 µH	56 µH
Inductance Tolerance	±20%	±20%	±20%
Current Rating (Amps)	1.8 A	1.8 A	1.7 A
DC Resistance (DCR)	190 mOhm Max	170 mOhm Max	157 mOhm Max
Shielding	Shielded	Shielded	Shielded
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	Nonstandard	Nonstandard	Nonstandard
Size / Dimension (mm)	12.00 x 12.00	12.50 x 12.50	12.24 x 12.24
Height - Seated (Max) (mm)	4.50	4.50	4.50
Operating Temperature (°C)	-40 to 100	-40 to 125	-40 to 130
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SRR1240-560M (Bourns Inc.) - Direct Substitute

The SRR1240-560M meets all critical electrical and mechanical parameters required for direct substitution. This part maintains identical inductance (56 µH), current rating (1.8 A), and physical dimensions (12.50 mm × 12.50 mm footprint with 4.50 mm height). The DC resistance specification of 170 mOhm maximum is superior to the 190 mOhm maximum of the primary part, resulting in lower power dissipation. The extended operating temperature range (-40°C to 125°C) provides additional thermal margin beyond the -40°C to 100°C requirement. ROHS3 compliance and MSL 1 rating are maintained. This part is suitable for direct PCB layout substitution with no design modifications required.

P1168.563NLT (Pulse Electronics) - Compatible Alternative

The P1168.563NLT satisfies electrical and mechanical substitution criteria with the following considerations. Inductance value (56 µH) and tolerance (±20%) are identical. The current rating of 1.7 A is 0.1 A below the 1.8 A specification of the primary part; this part is suitable only for applications where the actual operating current does not exceed 1.7 A. DC resistance of 157 mOhm maximum is superior to the primary part specification. Physical dimensions (12.24 mm × 12.24 mm) and seated height (4.50 mm) are compatible with the primary part footprint. Operating temperature range (-40°C to 130°C) exceeds the primary part requirement. ROHS3 compliance and MSL 1 rating are maintained. This part requires verification that circuit current demand does not exceed 1.7 A continuous operation.

Frequently Asked Questions (FAQ)

Q: Can the SRR1240-560M be used as a direct replacement for the CDRH124NP-560MC without PCB layout changes?

A: The SRR1240-560M has a footprint of 12.50 mm × 12.50 mm compared to the primary part's 12.00 mm × 12.00 mm. While the seated height (4.50 mm) is identical, the slightly larger footprint may require PCB layout verification to confirm adequate clearance from adjacent components. Electrical performance is fully compatible.

Q: What is the primary difference between the P1168.563NLT and the CDRH124NP-560MC?

A: The P1168.563NLT has a current rating of 1.7 A versus the primary part's 1.8 A rating. This 0.1 A reduction in current capacity is the limiting factor for substitution. All other electrical parameters (inductance, tolerance, DC resistance, shielding) and mechanical parameters (dimensions, height, mounting type) are compatible. This part is suitable only for circuits where continuous current does not exceed 1.7 A.

Q: Are all three parts RoHS3 compliant?

A: Yes. The CDRH124NP-560MC, SRR1240-560M, and P1168.563NLT all carry ROHS3 compliance certification. All parts are suitable for applications requiring RoHS3 compliance.

Q: What does MSL 1 (Unlimited) mean for handling and storage?

A: MSL 1 (Unlimited) indicates that the component has unlimited shelf life and does not require special moisture control during storage or handling. These parts can be stored at standard ambient conditions without desiccant packaging or controlled humidity environments.

Q: Can the P1168.563NLT be used in a circuit designed for 1.8 A continuous current?

A: No. The P1168.563NLT is rated for 1.7 A maximum continuous current. Using this part in a circuit requiring 1.8 A continuous operation would exceed the component's current rating and may result in thermal stress or inductor failure. The SRR1240-560M is the appropriate substitute for 1.8 A applications.

Q: How do the DC resistance values affect circuit performance?

A: DC resistance directly impacts power dissipation and circuit efficiency. The CDRH124NP-560MC has a maximum DCR of 190 mOhm, the SRR1240-560M has 170 mOhm, and the P1168.563NLT has 157 mOhm. Lower DC resistance reduces I²R losses. Both substitute parts offer improved efficiency compared to the primary part. For applications sensitive to power dissipation, the P1168.563NLT offers the lowest resistance, provided the 1.7 A current rating is acceptable.

Q: What is the significance of the ±20% inductance tolerance?

A: The ±20% tolerance defines the acceptable inductance range as 44.8 µH to 67.2 µH. All three parts share this tolerance specification. In circuit applications where inductance precision is critical, component selection should account for this tolerance band in filter design, impedance matching, or resonant frequency calculations.

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